Earlier quoted context omitted.
Waterproof phones with replaceable batteries existed, but they used more rubber and other tricks to pull it off. This had the advantage of making it a lot easier to close the phone again and still keep the water resistant properties. Having replaced the battery in my old phone, I sure understand why people don't "choose" to do so. The battery itself is worth maybe 20 bucks but the labour and tools required to replace…
Please name these waterproof phones with replaceable batteries. None of my Motorolas or Treos were waterproof. I believe that harden phones may have existed but were not available to normal consumers. Maybe I’m wrong which is why I want to learn what phones you’re talking about.
These phones weren't very popular in the west (Japan in particular had a large waterproof phone market, allegedly because people were taking them with them into the shower), but they have existed for a years, before the first Androids or iPhones became water resistant.
Phones like the Samsung XCover (the Android 2.3 one from 2011) were sold worldwide and featured a hotswappable battery. Over time these became bulkier and frankly uglier as they doubled down on how "rugged" they were, but the technology was clearly there.